Getting new rMBP 13". App suggestions?

My old Macbook Pro finally bit the dust, and after a lot of soul searching, I've ordered a 13" rMBP with the 2.6 GHz i5 and 8 GB RAM.

The jump in computing power between the 2009 Pro and this one is going to be huge. With that in mind, do you have suggestions on what cool new apps I should download and use?